Two problems related to gasoline engine have been reported for the 1997 GMC Sierra. The most recently reported issues are listed below.
I found 29 pages of the same problems on net lemon law. No safety defect mentioned in summary.
Consumer state while traveling 60 mph consumer notice gray smoke coming from vehicle consumer pulled vehicle over and noticed flames under vehicle consumer put fire out. Dealer has been contacted and stated fire came from transmission. Please provide further information. Nlm.